543 



Purines 



1037 Adenosine-3'-phosphate (3-Adenylic Acid, Yeast Adenylic Acid), 

 C„,H,40;N-,P, colorless crystals, m.p. 191-195° (dec), 

 [a]i.-" —66° (c 2 in 5', sodium hydroxide). 



NH2 



Yeast, Penicillium chrysogenum 



H. Steudel and E. Peiser, Z. physiol. Chem. 127 262 (1923). 

 D. A. Kita and W. H. Peterson, J. Biol. Chem. 203 861 

 (1953). 



1038 Adenosine-5'-phosphate (Muscle Adenylic Acid), Ci(jHi407N5P, 

 colorless crystals, m.p. 178°, [aju"" —50° (in formamide). 



NH.. 



OH 



0=P— O— CH. 



I 

 OH 



OH OH 



Yeasts, Lactobacillus arabinosiis, Penicillium chryso- 

 genum 



The 5'-diphosphate (ADP) also has been isolated from 

 microorganisms. 



E. Cabib, Luis F. Leloir and C. E. Cardini, ]. Biol. Chem. 

 203 1055 (1953). 



J. Baddiley and A. C. Mathias, /. Chem. Sac, 2723 (1954). 



A. Ballio, C. Casinovi and G. Serlupi-Crescenzi, Biochim. et 

 Biophys. Acta 20 414 (1956). 



